Tests For GASES

Question 0

Oxygen

Answer 0

• collect over water
• insert a glowing splint into the gas
• the splint delights

Question 1

Hydrogen

Answer 1

• collect over water or upwards into a tube or jar
• ignite gas with a lighted splint
• the gas burns with a squeaky pop

Question 2

Carbon dioxide

Answer 2

• collect over water or downwards into a tube or jar
• bubble the gas into limewater
• the limewater goes milky

Question 3

Chlorine

Answer 3

• collect downwards into a tube or jar. The green colour tells you when full.
• test damp litmus paper
• the litmus paper is bleached

Question 4

Ammonia

Answer 4

• collect upwards into a tube or jar.
• test with damp red litmus paper
• the red litmus turns blue